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Biswas M, Dey S, Dhara S, Panda S, Lahiri GK. Metal-ligand synergy driven functionalisation of alkylene linked bis(aldimine) on a diruthenium(II) platform. Cyclisation versus oxygenation. Dalton Trans 2024; 53:2167-2180. [PMID: 38192265 DOI: 10.1039/d3dt03730d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
This article addresses the impact of metal-ligand redox cooperativity on the functionalisation of coordinated ligands. It demonstrates the structure-reactivity correlation of bis(aldimine) derived bis-bidentate L (Py-CHN-(CH2)n-NCH-Py, with n = 2 (L1), 3 (L2), 4 (L3)) as a function of the conformation (syn/anti) of its alkylene linker as well as the overall structural form (cis/trans) of (acac)2RuII(μ-L)RuII(acac)2 complex moieties (1-5) possessing an electron-rich acetylacetonate (acac) co-ligand. A systematic variation of the bridging alkylene unit of L in RuII/RuII-derived 1-5 led to the following reactivity/redox events, which were validated through structural, spectroscopic, electrochemical and theoretical evaluations: (i) Cyclisation of the ethylene linked (syn conformation) bis-aldimine unit of L1 via C-C coupling yielded pyrazine bridged (acac)2RuII(μ-L1')RuII(acac)2, 1a, while the corresponding anti-form (ethylene linker) of the metal-bound L1 in 2 ((acac)2RuII(μ-L1)RuII(acac)2) led to oxygenation at the ligand backbone (bis-aldimine (L) → bis(carboxamido) (L'')) via O2 activation to generate RuIIIRuIII-derived (acac)2RuIII(μ-L1''2-)RuIII(acac)2 (2a). (ii) Consequently, propylene and butylene linked L2 and L3 bridged between two {Ru(acac)2} units in 3 and 4/5 underwent oxygenation of L to L'' to yield diruthenium(III) complexes 3a and 4a/5a, respectively. (iii) In contrast, analogous L bridged oxidised [(acac)2RuIII(μ-L)RuIII(acac)2](ClO4)2 ([2](ClO4)2-[5](ClO4)2) and [{(PPh3)2(CO)(H)RuII}2(μ-L)](ClO4)2 ([6](ClO4)2-[8](ClO4)2) involving electron poor co-ligands failed to undergo the oxygenation of L irrespective of its n value, reemphasising the effective role of redox interplay between RuII and L particularly in the presence of an electron-rich acac co-ligand in the functionalisation of the latter in 1a-5a.
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Affiliation(s)
- Mitrali Biswas
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Sanchaita Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Suman Dhara
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Sanjib Panda
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Goutam Kumar Lahiri
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
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Recent Overview of Potent Antioxidant Activity of Coordination Compounds. Antioxidants (Basel) 2023; 12:antiox12020213. [PMID: 36829772 PMCID: PMC9952845 DOI: 10.3390/antiox12020213] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/06/2023] [Accepted: 01/16/2023] [Indexed: 01/18/2023] Open
Abstract
During recent decades, the complexation of organic ligands toward several metal ions of s-p and d-block has been applied as a plan to enhance its antioxidant performance. Due to their wide range of beneficial impacts, coordination compounds are widely used in industries, specifically in the medicinal and pharmaceutical fields. The activity is generally improved by chelation consequently knowing that the characteristics of both ligands and metals can lead to the development of greatly active compounds. Chelation compounds are a substitute for using the traditional synthetic antioxidants, because metal chelates present benefits, including a variety in geometry, oxidation states, and coordination number, that assist and favor the redox methods associated with antioxidant action. As well as understanding the best studied anti-oxidative assets of these compounds, coordination compounds are involved in the free radical scavenging process and protecting human organisms from the opposing effects of these radicals. The antioxidant ability can be assessed by various interrelated systems. The methodological modification offers the most knowledge on the antioxidant property of metal chelates. Colorimetric techniques are the most used, though electron paramagnetic resonance (EPR) is an alternative for metallic compounds, since color does not affect the results. Information about systems, with their benefits, and restrictions, permits a dependable valuation of the antioxidant performance of coordination compounds, as well as assisting application in various states wherever antioxidant drugs are required, such as in food protection, appropriate good-packaged foods, dietary supplements, and others. Because of the new exhaustive analysis of organic ligands, it has become a separate field of research in chemistry. The present investigation will be respected for providing a foundation for the antioxidant properties of organic ligands, future tests on organic ligands, and building high-quality antioxidative compounds.
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Ahmed YM, Ashmawy AM, Omar M, Abbas AA, Mostafa SG, Mohamed GG. Synthesis, characterization, biological activity, DFT studies on transition metal complexes derived from 5,5′-(propane-1,3-diylbis(sulfanediyl))bis(1,3,4-thiadiazol-2-amine) ligand and its corrosion inhibition study on carbon steel. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.134956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Ibrahim MM, Shaban SY, Amer AA, Mohamed SF, Fathy AM, Al-Harbi SA, Ramadan AEMM. Tuning the structural and catalytic properties of copper(II)-based complexes containing pyridine-2,6-diimines. J Biomol Struct Dyn 2022; 40:10677-10695. [PMID: 34435546 DOI: 10.1080/07391102.2021.1947379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Four mononuclear penta coordinated copper(II) chelates, [CuLnBr2] nH2O, containing the tridentate neutral ligands, pyridine-2,6-diimine (Ln), were prepared via the template technique. Analytical and several physicochemical methods have been used to characterize the prepared metal chelates. Square-pyramidal stereochemistry was described to the current copper(II) complexes. DFT technique has been applied to optimize the structure of the running diimines and their corresponding copper-based compounds. Ligand substitution study performed to link the catalytic potency of the candidate oxidase mimics and their lability characters. Spectral investigations reveal that nature of substituents of the chelated ligands effectively tuning the Lewis acidity of copper(II) centers. Biomimetics of redox proteins specifically containing copper were examined towards the aerobic oxidation of polyphenol. Kinetic studies with the stopped-follow technique showed a close association between the Lewis acidity of the copper(II) nuclei of the prepared chelates and their oxidase-like activity. The catalytic activity of the natural enzyme (catechol oxidase from sweet potatoes) measured and compared with that for the present CuII chelates. The thermodynamic parameter drive force (ΔG° or λ) of the performed oxidation processes was determined from the values of redox potential of the chemical species involved in these catalytic reactions. The proposed catalytic reactions pathways have been discussed based on the outcomes of the kinetic investigations.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Mohamed M Ibrahim
- Chemistry Department, College of Science, Taif University, Saudi Arabia
| | - Shaban Y Shaban
- Chemistry Department, Faculty of Science, Kafr El-Sheikh University, Kafr El-Sheikh, Egypt
| | - Ahmed A Amer
- Chemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Soha F Mohamed
- Chemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Ahmed M Fathy
- Chemistry Department, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Sami A Al-Harbi
- Chemistry Department, University College in Al-Jamoum, Umm Al-Qura University, Makkah, Saudi Arabia
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Elshafie HS, Sadeek SA, Camele I, Mohamed AA. Biochemical Characterization of New Gemifloxacin Schiff Base (GMFX-o-phdn) Metal Complexes and Evaluation of Their Antimicrobial Activity against Some Phyto- or Human Pathogens. Int J Mol Sci 2022; 23:ijms23042110. [PMID: 35216223 PMCID: PMC8877648 DOI: 10.3390/ijms23042110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/07/2022] [Accepted: 02/11/2022] [Indexed: 02/06/2023] Open
Abstract
Four novel ligand-metal complexes were synthesized through the reaction of Fe(III), pleaseCo(II), Zn(II), and Zr(IV) with Schiff base gemifloxacin reacted with ortho-phenylenediamine (GMFX-o-phdn) to investigate their biological activities. Elemental analysis, FT-IR, 1H NMR, UV-visible, molar conductance, melting points, magnetic susceptibility, and thermal analyses have been carried out for insuring the chelation process. The antimicrobial activity was carried out against Monilinia fructicola, Aspergillus flavus, Penicillium italicum, Botrytis cinerea, Escherichia coli, Bacillus cereus, Pseudomonas fluorescens, and P. aeruginosa. The radical scavenging activity (RSA%) was in vitro evaluated using ABTS method. FT-IR spectra indicated that GMFX-o-phdn chelated with metal ions as a tetradentate through oxygen of carboxylate group and nitrogen of azomethine group. The data of infrared, 1H NMR, and molar conductivity indicate that GMFX–o-phdn reacted as neutral tetra dentate ligand (N2O2) with metal ions through the two oxygen atoms of the carboxylic group (oxygen containing negative charge) and two nitrogen atoms of azomethine group (each nitrogen containing a lone pair of electrons) (the absent of peak corresponding to ν(COOH) at 1715 cm−1, the shift of azomethine group peak from 1633 cm−1 to around 1570 cm−1, the signal at 11 ppm of COOH and the presence of the chloride ions outside the complex sphere). Thermal analyses (TG-DTG/DTA) exhibited that the decaying of the metal complexes exists in three steps with the final residue metal oxide. The obtained data from DTA curves reflect that the degradation processes were exothermic or endothermic. Results showed that some of the studied complexes exhibited promising antifungal activity against most of the tested fungal pathogens, whereas they showed higher antibacterial activity against E. coli and B. cereus and low activity against P. fluorescens and P. aeruginosa. In addition, GMFX-o-phdn and its metal complexes showed strong antioxidant effect. In particular, the parent ligand and Fe(III) complex showed greater antioxidant capacity at low tested concentrations than that of other metal complexes where their IC50 were 169.7 and 164.6 µg/mL, respectively.
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Affiliation(s)
- Hazem S. Elshafie
- School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, 85100 Potenza, Italy;
| | - Sadeek A. Sadeek
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig 44519, Egypt;
| | - Ippolito Camele
- School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, 85100 Potenza, Italy;
- Correspondence: ; Tel.: +39-0971-205544; Fax: +39-0971-205503
| | - Amira A. Mohamed
- Department of Basic Science, Zagazig Higher Institute of Engineering and Technology, Zagazig 44519, Egypt;
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Stevanović N, Mijatović A, Lolić A, Zlatović M, Baošić R. Influence of mono- and two-component organic modifiers on determination of lipophilicity of tetradentate Schiff bases. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-021-01884-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Synthesis of Bis (Benzoyl Acetone Ethylene Diimine) Schiff Base Complex of Nickel (II) Supported on Magnetite Silica Nanoparticles (Fe3O4@SiO2/Schiff-Base of Ni(II)) and Using It as an Efficient Catalyst for Green Synthesis of 1-Amidoalkyl-2-Naphthols. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-02119-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Peters LCJM, Engelkamp H, Zeitler U, Christianen PCM, Tinnemans P, Maan J, Rowan AE. Synthesis and Magnetic Properties of Two‐Step‐Coordination Schiff Base Clusters. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Laurens C. J. M. Peters
- High Field Magnet Laboratory (HFML – EMFL) Radboud University Toernooiveld 7 6525 ED Nijmegen The Netherlands
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Hans Engelkamp
- High Field Magnet Laboratory (HFML – EMFL) Radboud University Toernooiveld 7 6525 ED Nijmegen The Netherlands
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Uli Zeitler
- High Field Magnet Laboratory (HFML – EMFL) Radboud University Toernooiveld 7 6525 ED Nijmegen The Netherlands
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Peter C. M. Christianen
- High Field Magnet Laboratory (HFML – EMFL) Radboud University Toernooiveld 7 6525 ED Nijmegen The Netherlands
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Paul Tinnemans
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Jan‐Kees Maan
- High Field Magnet Laboratory (HFML – EMFL) Radboud University Toernooiveld 7 6525 ED Nijmegen The Netherlands
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Alan E. Rowan
- Institute for Molecules and Materials Radboud University Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
- Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensland Brisbane Australia
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Lee J, Kim K, Lee H, Nayab S. Cobalt(II) complexes supported by iminomethylpyridine derived ligands: Synthesis, characterization and catalytic application towards methyl methacrylate and rac-lactide polymerisations. Polyhedron 2021. [DOI: 10.1016/j.poly.2020.115003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Synthesis, Spectral Characterization and Biological Activities of Co(II) and Ni(II) Mixed Ligand Complexes. Molecules 2021; 26:molecules26040823. [PMID: 33562489 PMCID: PMC7915586 DOI: 10.3390/molecules26040823] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/20/2021] [Accepted: 01/25/2021] [Indexed: 11/17/2022] Open
Abstract
2,4-Dinitrophynylhydrazine and two thiocyanate ions in a (M:L1:L2) 1:2:2 molar ratio was synthesized in the complexes of Co(II) and Ni(II). The prepared compounds were identified through a C.H.N.S. analysis, conductivity measurements, powder X-ray diffraction (PXRD), the infrared spectrum, and a UV-visible spectrum analysis, in addition to the magnetic properties being measured. The measurements of the molar conductance implieda nonelectrolytic nature of compounds Co(II) and Ni(II). The magnetic susceptibility, as well as electronic spectra, represented all the metal complexesthroughoctahedral geometry, respectively. The PXRD patterns suggested that all the complexes were an orthorhombic system with unit cell parameters. The in-vitro biological activity of the ligand and the metal complexes were screened against the Gram-positive and negative pathogenic bacteria Staphylococcus aureus, Bacillus subtilis, Pseudomonas, aeruginosa and Escherichia coli, as well as the fungal species of Aspergillusniger and Candida albicans.Thus, the metal complexes showeda high efficiency of antimicrobial activity compared with the ligand. Furthermore, applications of the ligand, as well as the metal complexes, were tested for in-vitro antioxidant potential in aDPPH assay. The results showed that the activity of the metal complexes with the in-vitro antioxidant was more active than that of 2,4-dinitrophenylhydrazine(DNPH).
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Chandrasekar T, Arunadevi A, Raman N. Synthesis, spectral characterization, DNA-binding and antimicrobial profile of biological active mixed ligand Schiff base metal(II) complexes incorporating 1,8-diaminonaphthalene. J COORD CHEM 2021. [DOI: 10.1080/00958972.2020.1870967] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | - Alagarraj Arunadevi
- Research Department of Chemistry, VHNSN College, Virudhunagar, Tamil Nadu, India
| | - Natarajan Raman
- Research Department of Chemistry, VHNSN College, Virudhunagar, Tamil Nadu, India
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Elshwiniy WH, Ibrahim AG, Sadeek SA, Zordok WA. Ligational, density functional theory, and biological studies on some new Schiff base 2‐(2‐hydroxyphenylimine)benzoic acid (L) metal complexes. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5819] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Walaa H. Elshwiniy
- Department of Chemistry, Faculty of Science Zagazig University Zagazig 44519 Egypt
- Department of Chemistry, College of Science University of Bisha Bisha 61922 Saudi Arabia
| | - Asmaa G. Ibrahim
- Department of Chemistry, Faculty of Science Zagazig University Zagazig 44519 Egypt
| | - Sadeek A. Sadeek
- Department of Chemistry, Faculty of Science Zagazig University Zagazig 44519 Egypt
| | - Wael A. Zordok
- Department of Chemistry, Faculty of Science Zagazig University Zagazig 44519 Egypt
- Department of Chemistry University College of Quanfudha, Umm Al‐Qura University KSA El‐Quanfudha 21912 Saudi Arabia
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İnci D, Aydın R, Vatan Ö, Zorlu Y. A potent drug candidature of Cu(II) pyrazino[2,3-f][1,10]phenanthroline complexes with bioactive ligands: synthesis, crystal structures, biomolecular interactions, radical scavenging and cytotoxicities. J Biomol Struct Dyn 2020; 39:7194-7212. [PMID: 32811370 DOI: 10.1080/07391102.2020.1808070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
A novel ternary copper(II) complexes, - [Cu(py-phen)(asn)(NO3)(H2O)] (1) and [Cu(py-phen)(trp)(H2O)]NO3 (2)- (py-phen: pyrazino[2,3-f][1,10]phenanthroline, asn: asparagine, trp: tryptophan), have been synthesized and characterized by CHN analysis, ESI-MS, FTIR and single-crystal X-ray diffraction techniques. Interaction of the complexes 1 and 2 with CT-DNA has been investigated by absorption spectral titration, EB and Hoechst 33258 displacement assay. The interaction between the complexes 1 and 2 and BSA was investigated by electronic absorption and fluorescence spectroscopy methods. The experimental outcomes indicate that the fluorescence quenching mechanism between the complexes 1 and 2 and BSA is a static quenching process. The Stern-Volmer constants, binding constants, binding sites and the corresponding thermodynamic parameters (ΔG, ΔH, ΔS) of BSA + complex systems were determined at different temperatures. The binding distance between the complexes 1 and 2 and BSA was calculated according to FRET. The effect of the complexes 1 and 2 on the conformation of BSA was also examined using synchronous, two dimensional (2D) and three dimensional (3D) fluorescence spectroscopy. Radical scavenging activity of the complex was determined in terms of EC50, using the DPPH and H2O2 method. The anticancer activities of the complexes 1 and 2 were investigated using an XTT assay against three cancer cell lines (MCF-7, Caco-2 and A549) and non-tumor cell line (BEAS-2B). Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Duygu İnci
- Department of Chemistry, Faculty of Arts and Sciences, Kocaeli University, Kocaeli, Turkey
| | - Rahmiye Aydın
- Department of Chemistry, Faculty of Arts and Sciences, Bursa Uludag University, Bursa, Turkey
| | - Özgür Vatan
- Department of Biology, Faculty of Arts and Sciences, Bursa Uludag University, Bursa, Turkey
| | - Yunus Zorlu
- Department of Chemistry, Faculty of Science, Gebze Technical University, Gebze, Kocaeli, Turkey
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Milošević MD, Marinković AD, Petrović P, Klaus A, Nikolić MG, Prlainović NŽ, Cvijetić IN. Synthesis, characterization and SAR studies of bis(imino)pyridines as antioxidants, acetylcholinesterase inhibitors and antimicrobial agents. Bioorg Chem 2020; 102:104073. [PMID: 32693308 DOI: 10.1016/j.bioorg.2020.104073] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 05/02/2020] [Accepted: 06/30/2020] [Indexed: 12/17/2022]
Abstract
In this study we synthesized a series of sixteen bis(imino)pyridines (BIPs) starting from 2,6-diaminopyridine and various aromatic aldehydes, and evaluated their antioxidant, antibacterial, antifungal and acetylcholinesterase (AChE) inhibitory activity. The chemical structures were elucidated by FTIR, elemental analysis, ESR and HRMS. 1H and 13C NMR spectra couldn't be acquired due to the formation of stable, carbon-centered radical cations in a solution, as confirmed by ESR spectroscopy and DFT calculations. The in vitro antioxidant potency was evaluated using four assays: free radical scavenging activity (DPPH and ABTS), reducing power and total antioxidant capacity assay. BIPs demonstrated excellent antioxidant properties, and two derivatives proved to be more potent than reference antioxidants (ascorbic acid and Trolox) in all assays. DFT calculations on ωB97XD/6-311++g(d,p) level of theory provided valuable insights into the radical scavenging mechanism of BIPs. For hydroxyl-substituted BIPs, hydrogen atom transfer (HAT) is a predominant mechanism, while the single electron transfer coupled with proton transfer (SET-PT) governs the antioxidant activity of other derivatives. Intramolecular hydrogen bonding (IHB) plays an important role in the mechanism of antioxidant activity as revealed by noncovalent interaction analysis and rotational barrier calculations. The spin density of radical cations is localized on carbon atoms of a pyridine ring, which corroborates with g-factors and multiplicity obtained from ESR analysis. The most potent BIP exhibited moderate inhibitory activity toward AChE (IC50 = 20 ± 4 μM), while molecular docking suggested binding at the peripheral anionic site of AChE with the MMFF94 binding enthalpy of -43.4 kcal/mol. Moderate in vitro antimicrobial activity of BIPs have been determined against several pathogenic bacterial strains: Pseudomonas aeruginosa, Escherichia coli, Enterococcus faecalis, Staphylococcus aureus and clinical isolate of methicillin resistant S. aureus (MRSA). The antifungal activity of BIPs toward Candida albicans was also confirmed. The similarity ensemble approach combined with molecular docking suggested leucyl aminopeptidase as the probable antimicrobial target for the three most potent BIP derivatives.
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Affiliation(s)
- Milena D Milošević
- SI Institute of Chemistry, Technology and Metallurgy, National Institute, Department of Ecology and Techoeconomic, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia
| | - Aleksandar D Marinković
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Predrag Petrović
- Innovation Centre of Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Anita Klaus
- Department for Industrial Microbiology, Institute for Food Technology and Biochemistry, University of Belgrade-Faculty of Agriculture, Nemanjina 6, 11080 Belgrade, Serbia
| | - Milica G Nikolić
- Faculty of Sciences and Mathematics, Department of Chemistry, University of Niš, Višegradska 33, 18000 Niš, Serbia
| | - Nevena Ž Prlainović
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Ilija N Cvijetić
- Innovation Center of the Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia.
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El‐Attar MS, Abd El‐Lattif NS, Sadeek SA. Study on the nematicidal activity and chemical structure of NO bidentate Schiff base some metal complexes. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.201900261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mohamed S. El‐Attar
- Chemistry Department, Faculty of ScienceZagazig University Zagazig Egypt
- Chemistry Department, Faculty of ScienceJazan University Jazan Saudi Arabia
| | - Nosa S. Abd El‐Lattif
- Department of Pesticides FormulationCentral Agricultural Pesticides Laboratory Cairo Egypt
| | - Sadeek A. Sadeek
- Chemistry Department, Faculty of ScienceZagazig University Zagazig Egypt
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Lee J, Yoon M, Lee H, Nayab S. Stereoselective polymerization of methyl methacrylate and rac-lactide mediated by iminomethylpyridine based Cu(ii) complexes. RSC Adv 2020; 10:16209-16220. [PMID: 35493681 PMCID: PMC9052864 DOI: 10.1039/d0ra00805b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 04/16/2020] [Indexed: 12/11/2022] Open
Abstract
Iminomethylpyridine based copper(ii) complexes [LnCuCl2] (Ln = LA, LC–LF) and [LBCu(μ-Cl)Cl]2 have been synthesized and characterized.
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Affiliation(s)
- Jaegyeong Lee
- Department of Chemistry
- Green-Nano Materials Research Center
- Kyungpook National University
- Daegu
- Republic of Korea
| | - Minyoung Yoon
- Department of Chemistry
- Green-Nano Materials Research Center
- Kyungpook National University
- Daegu
- Republic of Korea
| | - Hyosun Lee
- Department of Chemistry
- Green-Nano Materials Research Center
- Kyungpook National University
- Daegu
- Republic of Korea
| | - Saira Nayab
- Department of Chemistry
- Shaheed Benazir Bhutto University
- Sheringal Dir (U)
- Islamic Republic of Pakistan
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Syed Ali Fathima S, Mohamed Sahul Meeran M, Nagarajan E. Design and synthesis of novel pyrazolone based coordination compounds: DNA synergy, biological screening, apoptosis, molecular docking and in-silico ADMET profile. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.07.059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Siva V, Bahadur SA, Shameem A, Athimoolam S, Lakshmi KU, Vinitha G. Synthesis, structural, vibrational, thermal, dielectric and optical properties of third order nonlinear optical single crystal for optical power limiting applications. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.04.091] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Şenel P, İnci D, Aydın R, Huriyet H, Zorlu Y, Çinkılıç N. Methyl substituent effect on one‐dimensional copper(II) coordination polymers containing biologically active ligands: Synthesis, characterization, DNA interactions and cytotoxicities. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5122] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Pelin Şenel
- Department of Chemistry, Faculty of Arts and SciencesBursa Uludag University 16059 Bursa Turkey
| | - Duygu İnci
- Department of Chemistry, Faculty of Arts and SciencesBursa Uludag University 16059 Bursa Turkey
| | - Rahmiye Aydın
- Department of Chemistry, Faculty of Arts and SciencesBursa Uludag University 16059 Bursa Turkey
| | - Huzeyfe Huriyet
- Department of Biology, Faculty of Arts and SciencesBursa Uludag University 16059 Bursa Turkey
| | - Yunus Zorlu
- Department of ChemistryGebze Technical University 41400 Gebze Kocaeli Turkey
| | - Nilüfer Çinkılıç
- Department of Biology, Faculty of Arts and SciencesBursa Uludag University 16059 Bursa Turkey
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20
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Vinodkumar, Keshavayya J. Synthesis, structural investigations and in vitro biological evaluation of N, N-dimethyl aniline derivatives based azo dyes as potential pharmacological agents. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.03.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Synthesis of novel (E)-2-((anthracen-9-ylmethylene)amino)pyridin-3-ol and its transition metal complexes: Multispectral characterization, biological evaluation and computational studies. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.01.101] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Exploring the DNA interactions, FGF growth receptor interaction and biological screening of metal(II) complexes of NNN donor ligand derived from 2‑(aminomethyl)benzimidazole. Int J Biol Macromol 2019; 126:1303-1317. [DOI: 10.1016/j.ijbiomac.2018.09.116] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Revised: 09/18/2018] [Accepted: 09/20/2018] [Indexed: 11/22/2022]
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23
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Lee J, Lee H, Nayab S, Yoon KB. Synthesis, characterization and polymerisation studies of cadmium(II) complexes containing N,N′,X-tridentate X-substituted (X = N, O) 2-iminomethylpyridines. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.11.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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24
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İnci D, Aydın R, Vatan Ö, Şahin O, Çinkılıç N. Water-soluble binary and ternary palladium(ıı) complexes containing amino acids and intercalating ligands: synthesis, characterization, biomolecular interactions and cytotoxicities. NEW J CHEM 2019. [DOI: 10.1039/c8nj05934a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel water soluble palladium(ii) complexes have been synthesized and characterized. Moreover, the cytotoxicities of these complexes against different human tumor and healthy cell lines were investigated by the XTT assay.
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Affiliation(s)
- Duygu İnci
- Department of Chemistry
- Faculty of Arts and Sciences
- Uludag University
- 16059 Bursa
- Turkey
| | - Rahmiye Aydın
- Department of Chemistry
- Faculty of Arts and Sciences
- Uludag University
- 16059 Bursa
- Turkey
| | - Özgür Vatan
- Department of Biology
- Faculty of Arts and Sciences
- Uludag University
- 16059 Bursa
- Turkey
| | - Onur Şahin
- Scientific and Technological Research Application and Research Center
- Sinop University
- 57000 Sinop
- Turkey
| | - Nilüfer Çinkılıç
- Department of Biology
- Faculty of Arts and Sciences
- Uludag University
- 16059 Bursa
- Turkey
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25
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El-Boraey HA, El-Salamony MA. Transition Metal Complexes with Polydentate Ligand: Synthesis, Characterization, 3D Molecular Modelling, Anticancer, Antioxidant and Antibacterial Evaluation. J Inorg Organomet Polym Mater 2018. [DOI: 10.1007/s10904-018-1042-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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26
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Ayoub MA, Abd-Elnasser EH, Ahmed MA, Rizk MG. Some new metal(II) complexes based on bis-Schiff base ligand derived from 2-acetylethiophine and 2,6-diaminopyridine: Syntheses, structural investigation, thermal, fluorescence and catalytic activity studies. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.03.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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27
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Bouchoucha A, Zaater S, Bouacida S, Merazig H, Djabbar S. Synthesis and characterization of new complexes of nickel (II), palladium (II) and platinum(II) with derived sulfonamide ligand: Structure, DFT study, antibacterial and cytotoxicity activities. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.02.057] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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28
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Synthesis, spectral, thermal and antimicrobial studies on cobalt(II), nickel(II), copper(II), zinc(II) and palladium(II) complexes containing thiosemicarbazone ligand. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.12.075] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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29
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Arunadevi A, Raman N. Biological contour, molecular docking and antiproliferative studies of DNA targeted histidine based transition metal(II) complexes: Invention and its depiction. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4250] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
| | - Natarajan Raman
- Research Department of Chemistry; VHNSN College; Virudhunagar 626 001 India
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30
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Shoar Ghaffari S, Ghassemzadeh M, Mesbah AW. A new ferrocenyl-triazine Schiff base as a novel precursor for selective preparation of iron oxide nanostructures. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.05.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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31
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Sahin M, Korkmaz H, Kocak N, Sahin O, Karakurt S, Yilmaz M. Synthesis of asymmetrical tridendate Schiff bases and metal complexes and investigation of anticarcinogen effects on human colon and cervical cancers. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2017. [DOI: 10.1080/10601325.2017.1294451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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32
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A mononuclear Ru(II) complex with meloxicam: DNA- and BSA-binding, molecular modeling and anticancer activity against human carcinoma cell lines. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.04.037] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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33
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Ebrahimpoor S, Khoshnood RS, Beyramabadi SA. A thermodynamic study of complexation process between N,N′-dipyridoxylidene(1,4-butanediamine) and Cd2+ in some binary mixed solvents using conductometry. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2016. [DOI: 10.1134/s0036024416130185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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34
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Exploration of cellular DNA lesion, DNA-binding and biocidal ordeal of novel curcumin based Knoevenagel Schiff base complexes incorporating tryptophan: Synthesis and structural validation. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.02.102] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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35
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Mahmoud WH, Deghadi RG, Mohamed GG. Novel Schiff base ligand and its metal complexes with some transition elements. Synthesis, spectroscopic, thermal analysis, antimicrobial and in vitro
anticancer activity. Appl Organomet Chem 2016. [DOI: 10.1002/aoc.3420] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Walaa H. Mahmoud
- Chemistry Department, Faculty of Science; Cairo University; Giza 12613 Egypt
| | - Reem G. Deghadi
- Chemistry Department, Faculty of Science; Cairo University; Giza 12613 Egypt
| | - Gehad G. Mohamed
- Chemistry Department, Faculty of Science; Cairo University; Giza 12613 Egypt
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36
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Synthesis, spectroscopic studies, thermal analyses, biological activity of tridentate-coordinated transition-metal complexes [M(L)X2] and crystal structure of [ZnBr2(2,6-bis(tert-butylthiomethyl)pyridine)]. CR CHIM 2015. [DOI: 10.1016/j.crci.2014.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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37
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Mohamed RG, Elantabli FM, Helal NH, El-Medani SM. New group 6 metal carbonyl complexes with 4,5-dimethyl-N,N-bis(pyridine-2-yl-methylene)benzene-1,2-diimine Schiff base: synthesis, spectral, cyclic voltammetry and biological activity studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 141:316-326. [PMID: 25670089 DOI: 10.1016/j.saa.2015.01.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 11/15/2014] [Accepted: 01/22/2015] [Indexed: 06/04/2023]
Abstract
Thermal reaction of M(CO)6 (M=Cr, Mo or W) with a Schiff base (DMPA) derived from the condensation of 4,5-dimethyl-1,2-phenylenediamine and pyridine-2-carboxaldehyde in THF in absence and presence of a secondary ligand; 2-aminobenzimidazole (Abz), thiourea (Tu) or 2-(2'-pyridyl)benzimidazole (pybz) were studied. The reaction of Cr(CO)6 gave the four complexes Cr2(CO)2(DMPA)2; 1, Cr(DMPA)2(Abz)2; 2, Cr2(CO)4(DMPA)2(Tu)2; 3 and Cr(DMPA)2(Pybz); 4, while the thermal reaction of Mo(CO)6 resulted in the formation of the two complexes Mo2(O)6(DMPA)2; 5, and Mo2(O)2(CO)2(DMPA)2(Tu)2; 6. Thermal reaction of W(CO)6 and the Schiff base DMPA gave the complex W(O)2(DMPA)2; 7. The ligand DMPA and its metal complexes have been reported and characterized based on elemental analyses, IR, (1)H NMR, magnetic measurements, and thermal analysis. Cyclic voltammetry and biological activity were also investigated.
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Affiliation(s)
- Rania G Mohamed
- Chemistry Department, Faculty of Science, Fayoum University, Fayoum, Egypt
| | - Fatma M Elantabli
- Chemistry Department, Faculty of Science, Fayoum University, Fayoum, Egypt
| | - Nadia H Helal
- Chemistry Department, Faculty of Science, Fayoum University, Fayoum, Egypt
| | - Samir M El-Medani
- Chemistry Department, Faculty of Science, Fayoum University, Fayoum, Egypt.
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38
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Habala L, Bartel C, Giester G, Jakupec MA, Keppler BK, Rompel A. Complexes of N-hydroxyethyl-N-benzimidazolylmethylethylenediaminediacetic acid with group 12 metals and vanadium-Synthesis, structure and bioactivity of the vanadium complex. J Inorg Biochem 2015; 147:147-52. [PMID: 25920686 DOI: 10.1016/j.jinorgbio.2015.04.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 04/03/2015] [Accepted: 04/03/2015] [Indexed: 11/18/2022]
Abstract
Four new complexes of group 12 metals [Zn(II), Cd(II) and Hg(II)], along with vanadyl bound to the ligand N-hydroxyethyl-N-benzimidazolylmethylethylenediaminediacetic acid, have been synthesized and characterized. The structure of the complexes with Zn(II), Hg(II) and V(IV) was determined by X-ray structural analysis. In all observed cases, the symmetry of these complexes was found to be distorted octahedral. The inhibition of protein tyrosine phosphatase 1B by the vanadium(IV) complex was demonstrated. The cytotoxicity of the vanadium(IV) complex was tested in vitro against three cancer cell lines, with a comparison of the activity of the free ligand and of vanadyl acetylacetonate and sodium orthovanadate. The IC50 values of the complex were in the range of 9 to 21μM. Remarkably, cytotoxic potency in the multidrug-resistant non-small cell lung cancer cell line A549 was at least as high as in the broadly chemosensitive ovarian teratocarcinoma cell line CH1(PA-1).
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Affiliation(s)
- Ladislav Habala
- Institut für Biophysikalische Chemie, Fakultät für Chemie, Universität Wien, Althanstr. 14, A-1090 Wien, Austria; Department of Chemical Theory of Drugs, Faculty of Pharmacy, Comenius University, Kalinciakova 8, SK-832 32 Bratislava, Slovakia
| | - Caroline Bartel
- Institut für Anorganische Chemie, Fakultät für Chemie, Universität Wien, Althanstr. 14, A-1090 Wien, Austria
| | - Gerald Giester
- Institut für Mineralogie und Kristallographie, Universität Wien, Althanstr. 14, A-1090 Wien, Austria
| | - Michael A Jakupec
- Institut für Anorganische Chemie, Fakultät für Chemie, Universität Wien, Althanstr. 14, A-1090 Wien, Austria
| | - Bernhard K Keppler
- Institut für Anorganische Chemie, Fakultät für Chemie, Universität Wien, Althanstr. 14, A-1090 Wien, Austria
| | - Annette Rompel
- Institut für Biophysikalische Chemie, Fakultät für Chemie, Universität Wien, Althanstr. 14, A-1090 Wien, Austria.
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39
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Synthesis, characterization, X-ray structures, and biological activity of some metal complexes of the Schiff base 2,2′-(((azanediylbis(propane-3,1-diyl))bis(azanylylidene))bis(methanylylidene))diphenol. Polyhedron 2015. [DOI: 10.1016/j.poly.2014.09.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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40
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Essawy AA, Afifi MA, Moustafa H, El-Medani SM. DFT calculations, spectroscopic, thermal analysis and biological activity of Sm(III) and Tb(III) complexes with 2-aminobenzoic and 2-amino-5-chloro-benzoic acids. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 131:388-397. [PMID: 24835942 DOI: 10.1016/j.saa.2014.04.134] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 03/16/2014] [Accepted: 04/14/2014] [Indexed: 06/03/2023]
Abstract
The complexes of Sm(III) and Tb(III) with 2-aminobenzoic acid (anthranilic acid, AA) and 2-amino-5-chlorobenzoic acid (5-chloroanthranilic acid, AACl) were synthesized and characterized based on elemental analysis, IR and mass spectroscopy. The data are in accordance with 1:3 [Metal]:[Ligand] ratio. On the basis of the IR analysis, it was found that the metals were coordinated to bidentate anthranilic acid via the ionised oxygen of the carboxylate group and to the nitrogen of amino group. While in 5-chloroanthranilic acid, the metals were coordinated oxidatively to the bidentate carboxylate group without bonding to amino group; accordingly, a chlorine-affected coordination and reactivity-diversity was emphasized. Thermal analyses (TGA) and biological activity of the complexes were also investigated. Density Functional Theory (DFT) calculations at the B3LYP/6-311++G (d,p)_ level of theory have been carried out to investigate the equilibrium geometry of the ligand. The optimized geometry parameters of the complexes were evaluated using SDDALL basis set. Moreover, total energy, energy of HOMO and LUMO and Mullikan atomic charges were calculated. In addition, dipole moment and orientation have been performed and discussed.
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Affiliation(s)
- Amr A Essawy
- Chemistry Department, Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
| | - Manal A Afifi
- Chemistry Department, Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
| | - H Moustafa
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt.
| | - S M El-Medani
- Chemistry Department, Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
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41
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Alyar S, Özbek N, Yıldırım SÖ, Ide S, Butcher RJ. Experimental and computational study on 2,2'-[(1E,2E)-hydrazine-1,2-diylidenedi(1E)eth-1-yl-1-ylidene]diphenol and its Ni(II), Pt(II), Pd(II) complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 130:198-207. [PMID: 24785093 DOI: 10.1016/j.saa.2014.03.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Revised: 03/05/2014] [Accepted: 03/18/2014] [Indexed: 06/03/2023]
Abstract
2,2'-[(1E,2E)-hydrazine-1,2-diylidenedi(1E)eth-1-yl-1-ylidene]diphenol and its dimeric, binuclear Ni(II), Pd(II) and Pt(II) metal complexes were synthesized. Hydrazine derivative and its complexes were characterized by elemental analyses, LC-MS, IR, electronic spectra, (1)H and (13)C NMR spectra, conductivity and magnetic measurements. 1H and 13C shielding tensors for crystal structure were calculated with GIAO/DFT/B3LYP/6-311++G(d,p) methods in CDCl3. The vibrational band assignments were performed at B3LYP/6-311++G(d,p) theory level combined with scaled quantum mechanics force field (SQMFF) methodology. The antibacterial activities of synthesized compounds were studied against some Gram-positive and Gram-negative bacteria by using the microdilution and disk diffusion method. As the antibacterial activity results evidently show, the compound possessed a broad spectrum of activity against the tested bacteria.
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Affiliation(s)
- Saliha Alyar
- Department of Chemistry, Science Faculty, Karatekin University, TR-18100 Çankırı, Turkey.
| | - Neslihan Özbek
- Department of Primary Education, Faculty of Education, Ahi Evran University, 40100 Kırşehir, Turkey
| | - Sema Öztürk Yıldırım
- College of Arts & Sciences, Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA; Department of Physics, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey
| | - Semra Ide
- Department of Physics Engineering, Faculty of Engineering, Hacettepe University, 06800 Beytepe, Ankara, Turkey
| | - Ray J Butcher
- College of Arts & Sciences, Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
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42
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Bouchoucha A, Terbouche A, Bourouina A, Djebbar S. New complexes of manganese (II), nickel (II) and copper (II) with derived benzoxazole ligands: Synthesis, characterization, DFT, antimicrobial activity, acute and subacute toxicity. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.04.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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43
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Mohamad ADM, Rabia MK, Ismail NM, Mahmoud AA. Retracted: Acid-Catalyzed Aquation of Ni(II)-Hydrazone Complexes: Kinetics and Solvent Effect. INT J CHEM KINET 2014. [DOI: 10.1002/kin.20861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Mostafa K. Rabia
- Chemistry Department; Faculty of Science; Sohag University; 82534 Sohag Egypt
| | - Nabawia M. Ismail
- Chemistry Department; Faculty of Science; Sohag University; 82534 Sohag Egypt
| | - Ali Abdo Mahmoud
- Chemistry Department; Faculty of Science; Sohag University; 82534 Sohag Egypt
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44
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Raman N, Selvaganapathy M, Radhakrishnan S. Efficient interrupting skills of amino acid metallointercalators with DNA at physiological pH: evaluation of biological assays. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 127:185-195. [PMID: 24632172 DOI: 10.1016/j.saa.2014.02.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 12/04/2013] [Accepted: 02/09/2014] [Indexed: 06/03/2023]
Abstract
The 4-aminoantipyrine derivatives (NO2, OCH3) and their mixed-ligand complexes with amino acids have been synthesized and investigated for their binding with CT DNA using UV-visible spectroscopy, cyclic voltammetry, and viscosity measurements under physiological conditions of pH (stomach 4.7; blood 7.4). The results from all techniques i.e. binding constant (Kb), and free energy change (ΔG) were in good agreement and inferred spontaneous compound-DNA complexes formation via intercalation. Among all the compounds 1 and 4 showed comparatively greater binding at pH 7.4 as evident from its greater Kb values. All the complexes exhibit oxidative cleavage of supercoiled (SC) pBR322 plasmid DNA in the presence of H2O2 as an activator. It is remarkable that at 25μM concentration 1 and 4 completely degrade SC DNA into undetectable minor fragments and thus they act as efficient chemical nucleases. Among the new complexes, complexes 1 and 4 have highest potential against all the microorganisms tested. The results of the above biological experiments also reveal that the choice of different metal ions has little influence on the DNA binding, DNA cleavage and antimicrobial assay.
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Affiliation(s)
- Natarajan Raman
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India.
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45
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Raman N, Sakthivel A, Pravin N. Exploring DNA binding and nucleolytic activity of few 4-aminoantipyrine based amino acid Schiff base complexes: a comparative approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 125:404-413. [PMID: 24566120 DOI: 10.1016/j.saa.2014.01.108] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 01/20/2014] [Accepted: 01/22/2014] [Indexed: 06/03/2023]
Abstract
A series of novel Co(II), Cu(II), Ni(II) and Zn(II) complexes were synthesized from Schiff base(s), obtained by the condensation of 4-aminoantipyrine with furfural and amino acid (glycine(L1)/alanine(L2)/valine(L3)) and respective metal(II) chloride. Their structural features and other properties were explored from the analytical and spectral methods. The binding behaviors of the complexes to calf thymus DNA were investigated by absorption spectra, viscosity measurements and cyclic voltammetry. The intrinsic binding constants for the above synthesized complexes are found to be in the order of 10(2) to 10(5) indicating that most of the synthesized complexes are good intercalators. The binding constant values (Kb) clearly indicate that valine Schiff-base complexes have more intercalating ability than alanine and glycine Schiff-base complexes. The results indicate that the complexes bind to DNA through intercalation and act as efficient cleaving agents. The in vitro antibacterial and antifungal assay indicates that these complexes are good antimicrobial agents against various pathogens. The IC50 values of [Ni(L1)2] and [Zn(L1)2] complexes imply that these complexes have preferable ability to scavenge hydroxyl radical.
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Affiliation(s)
- N Raman
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India.
| | - A Sakthivel
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India
| | - N Pravin
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India
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Mahmoud WH, Mohamed GG, El-Dessouky MMI. Coordination modes of bidentate lornoxicam drug with some transition metal ions. Synthesis, characterization and in vitro antimicrobial and antibreastic cancer activity studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 122:598-608. [PMID: 24334061 DOI: 10.1016/j.saa.2013.11.069] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 10/19/2013] [Accepted: 11/10/2013] [Indexed: 06/03/2023]
Abstract
The NSAID lornoxicam (LOR) drug was used for complex formation reactions with different metal salts like Cr(III), Mn(II), Fe(III) and Ni(II) chlorides and Fe(II), Co(II), Cu(II) and Zn(II) borates. Mononuclear complexes of these metals are obtained that coordinated to NO sites of LOR ligand molecule. The nature of bonding and the stereochemistry of the complexes have been deduced from elemental analyses, IR, UV-Vis, (1)H NMR, mass, electronic spectra, magnetic susceptibility and ESR spectral studies, conductivity measurements, thermogravimetric analyses (TG-DTG) and further confirmed by X-ray powder diffraction. The activation thermodynamic parameters are calculated using Coats-Redfern and Horowitz-Metzger methods. The data show that the complexes have composition of ML2 type except for Fe(II) where the type is [ML3]. The electronic absorption spectral data of the complexes suggest an octahedral geometry around the central metal ion for all the complexes. The antimicrobial data reveals that LOR ligand in solution show inhibition capacity less or sometimes more than the corresponding complexes against all the species under study. In order to establish their future potential in biomedical applications, anticancer evaluation studies against standard breast cancer cell lines (MCF7) was performed using different concentrations. The obtained results indicate high inhibition activity for Cr(III), Fe(II) and Cu(II) complexes against breast cancer cell line (MCF7) and recommends them for testing as antitumor agents.
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Affiliation(s)
- Walaa H Mahmoud
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Gehad G Mohamed
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt.
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Rabia MK, Mohamad ADM, Ismail NM, Mahmoud AA. Synthesis and physico-chemical properties of some Ni(II) complexes with isatin-hydrazones. RUSS J GEN CHEM+ 2014. [DOI: 10.1134/s1070363213120487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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48
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Dhanaraj CJ, Johnson J. Synthesis, characterization, electrochemical and biological studies on some metal(II) Schiff base complexes containing quinoxaline moiety. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 118:624-631. [PMID: 24095772 DOI: 10.1016/j.saa.2013.09.007] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 08/21/2013] [Accepted: 09/02/2013] [Indexed: 06/02/2023]
Abstract
Novel Co(II), Ni(II), Cu(II) and Zn(II) complexes of Schiff base derived from quinoxaline-2,3-(1,4H)-dione and 4-aminoantipyrine (QDAAP) were synthesized. The ligand and its complexes were characterized by elemental analyses, molar conductance, magnetic susceptibility measurements, FTIR, UV-Vis., mass and (1)H NMR spectral studies. The X band ESR spectrum of the Cu(II) complex at 300 and 77K were also recorded. Thermal studies of the ligand and its complexes show the presence of coordinated water in the Ni(II) and Zn(II) complexes. The coordination behavior of QDAAP is also discussed. All the complexes are mono nuclear and tetrahedral geometry was found for Co(II) complex. For the Ni(II) and Zn(II) complexes, octahedral geometry was assigned and for the Cu(II) complex, square planar geometry has been suggested. The grain size of the complexes was estimated using powder XRD. The surface morphology of the compounds was studied using SEM analysis. Electrochemical behavior of the synthesized complexes in DMF at room temperature was investigated by cyclic voltammetry. The in vitro biological screening of QDAAP and its metal complexes were tested against bacterial species Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa. The fungal species include Aspergillus niger, Aspergillus flavus and Candida albicans. The DNA cleavage activity of QDAAP and its complexes were also discussed.
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Affiliation(s)
- Chellaian Justin Dhanaraj
- Department of Chemistry, University College of Engineering Nagercoil, Anna University, Tirunelveli Region, Konam, Nagercoil 629 004, Tamil Nadu, India.
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Nami SAA, Husain A, Ullah I. Self assembled homodinuclear dithiocarbamates: one pot synthesis and spectral characterization. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 118:380-388. [PMID: 24064153 DOI: 10.1016/j.saa.2013.08.064] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 08/03/2013] [Accepted: 08/15/2013] [Indexed: 06/02/2023]
Abstract
Several self assembled homodinuclear complexes of the type [M2(Ldtc)2·4H2O] derived from quadridentate ligand (Ldtc), where Ldtc = 2-aminobenzoylhydrazidebis(dithiocarbamate) and M = Mn(II), Fe(II), Co(II), Ni(II), Cu(II) and Zn(II) have been reported. The in situ procedure gives high yield with the formation of single product as evident by TLC and various other physicochemical techniques. Elemental analysis, TGA, (1)H NMR, (13)C NMR, ESI mass spectrometry, EPR, UV-vis. and IR spectroscopy were used to characterize the homodinuclear complexes. The spectroscopic evidences and room temperature magnetic moment values suggest that all the complexes have octahedral geometry around the transition metal atom. A symmetrical bidentate coordination of the dithiocarbamato moiety has been observed in all the complexes. The energy-minimized structure of the molecule also showed that each metal atom acquires a distorted octahedral geometry. The complexes exhibit a three-step thermolytic pattern and are non-electrolyte in nature.
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Affiliation(s)
- Shahab A A Nami
- Department of Kulliyat, Faculty of Unani Medicine, Aligarh Muslim University, Aligarh 202002, India.
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Köse Baran E, Bağdat Yaşar S. Synthesis, spectral studies and complexation properties of N,N′-bis(5-bromo-salicylidene)-2-hydroxy-1,3-propanediamine (BSHP) and iron extraction with BSHP from oils. JOURNAL OF ANALYTICAL CHEMISTRY 2013. [DOI: 10.1134/s1061934813090074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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